So if there's no knife at your back, you don't have to do anything? Or, as Dostoevsky tried to argue, "If God doesn't exist, everything is permissible?"
My sense is that if you and I come to a nexus, we both have issues and skills, and we both have a moment to intersect, that's reason enough to make our moment a positive experience.
There are many other "reasons," none of which require a ticking clock.
I think I agree with those atheists who say that if people need God as a reason to play well with others, may God live long and prosper.
And if they also need time as a reason to play well with others, let's run the treadmill as long as we can.
Time is always the knife at your back. We don't live in eternity we live in the temporal. If every thing is permissible then we are all in trouble as power over others will become the knife at your back.
The reason to come to a moment of intersection is because we realize that we are indeed subject to time otherwise we could just keep putting it off or ignoring it because frankly we don't always feel like doing the positive thing.
You later wrote:
"Why focus on getting to a place other than the place we currently occupy?"
Because where we currently occupy is doomed to a time sensitive end. It is filled with much negativity even if we say that we should try to stay positive.
You write:
"When we pursue right action, we create the heavenly. We we pursue wrong action, we create the hellish. What could be a more compelling motivation?"
The question then becomes what is right action? How do you know what right action is. What if what you think is right action conflicts what someone else thinks is right action? You could say right action is selflessness but is that true? For example I could give up all my possessions to the homeless or donate all my property to some charity, a very selfless thing to do. What about my family, they are not homeless, my child can no longer attend college and I look terrible going to work and can't get adequate rest and lose my job. Ultimately 5 people become homeless because I did what I think is the right thing to do.
So ultimately the motivation has to be based upon a reasoned position which takes into account the reality of time and physical reality. And ultimately the ticking of the clock is essential to our lives and understanding and motivations. It can't be separated from our lives the Biblical admonitions simply reinforce the reality that we have finite lives and we have to make choices and decisions and other people have finite lives to make choices and decisions also.
Getting back to my original point if we all get to the same place, the place of eternal life no matter what our choices and decisions then indeed everything is permissible, love or hate. If however this life is all there is then we are dealing with a different philosophical situation and we don't have to think about eternity at all. But that is not what the thread began with so it is beyond the current discussion.